A bodyguard apparently went berserk and shot dead his own boss, killed two other men and injured four others at the expressway leading to the Penang Bridge Thursday evening. George Town OCPD Asst Comm Mior Faridalathrash Wahid identified the Datuk as Ong Teik Kwong, while Penang CID chief Senior Asst Comm Zainol Samah said police arrested the bodyguard at the scene. Traffic came to an almost standstill heading towards Penang Bridge following the incident.